Rotary-valve-type internal-combustion engine



"Nov. 22, 1927.

E. W. JEWELL ROTARY VALVE TYPE INTERNAL coMBus TIoN ENGINE Filed April 12. 1926 3 Sheets-Sheet l INVEN TOR. EDWARD WJEWELL I ATTORNEY Nov. 22, 1927. v I

' E. W. JEWELL ROTARY VALVE TYPE INTERNAL COMBUSTION ENGINE 3 Sheets-Sheet 2 Filed April 12. 1926 m m m w.

EDWARD W JEWZLL A TTORNEY Nov. 22, 1927.

E. W. JEWELL ROTARY VALVE TYPE INTERNAL COMBUSTION ENGINE Filed April 12, 1935 3 Sheets-Sheet 3 INVENTOR. EDWAED WJEWZLL A TTORNEY Patented Nov. 1927.

UNITED STATES PATENT nnwannw. Jaw-ELL, or SAN DIEGO, cAmroRNrA. 5 A

noranyivhnvn-rvrn rivrERNAL-oo n srmn ENGI E; j

Application filed April 12, i926. Serial No. 101,342.

.several cylinders or due to the compression of the gases therein, will be reduced to a minimum, and whereby." ven lubrication is permitted at all times between the adjacent surfaces of the valve and the cylindrical valve barrel;-second, to provide an internal coinbustion'engine of this class in which the rotary valve and the housing therefor are provided with large gas passages which can'- not be readily clogged with carbon and which permit free passage of the fuel and ere haust gases at all times, permitting the eX haust gas passages to be lre'ptlcool, and therefore providing for effective cooling of the whole valve structure, and in general preventing ov'erheatin of the motor and providing for high e'iiiciency of the same; third, to provide a rotary valve for internal combustion engines in which the outer or peripheral pertion of the valve is provided with a hardened steel shell shrunk over a hol ow cylindrical valve member, whereby friction is further reduced to a minimum and whereby wear of v the outer engaging surface of the valve member is reduced to a minimum; fourth, to pro vide a' novel oiling system for an internal combustion engine of this class, whereby the rotary valve is efficiently oiled under all con-- ditions; fifth, to provide an internal combustion engine of this class in which the lubri eating oil applied at the ends of the periph' eral portionof'the rotary valve and at the bearings at the ends of the valve s returned to the crankcase of the engine or any other sultable Oll reservoir thereof; sixth, to provide an internal combustion engine of this class which is so constructed that the rotary valve may be easily removed from one end of the valve barrelfor mspection or'replacement without dismou'nting anymaterial portion of the engine; seventh, to provide an en gine of this class having a hollow rotary 'butinwhich the points of-the plugs are protected from carbonization and oil from valve, which valve is so constructed and so mounted at the head end of, the engine that exhaust gases escaping between the adjacent surfacesof the valve and the 'containing barrel are forced into one end of the valve, through the same and out at the other end into the crankcase; eighth, to provide a novel water-cooled, rotary valve housing for an engine of this class whereby the rotary valve may be effectively cooled and whereby the lubricating oil between the adjacent surfaces of the valve and its housing disintegrates and forms a carbon coating between said surfaces; ninth, to provide a rotary valve containing head for an internal combustionerigine of thisclass'in which spark plugs are secured in the head from the-side and atan angle .so that the spark is in close proximity to the combustible charge in the cylinders the valve tenth, to provide a novel chain drive mechanism inan engine vof this class for driving a rotary" valve from the crank-' shaft of the engine and simultaneously drivsing the water pump and'cooling' fan; eleventh, to provide novelly constructed fuel iIitake and exhaust manifolds fora rotary valve type internal combustion engine in which, a portion of the exhaust gases is passed through the intake manifold for heating the fuel gases passing through the same; twelfth, to provide an'inta-ke manifold of this class' whereby the exhaust gas carrying conductor passing through the same facilitates the mixti l ing of the fuel "asfes and the distribution of the same to theseveral fuel intake ports in the valve head a-ndto the ports in the valve; thirteenth, to provide as a whole a novelly constructedrotary valve ty'peinter- 'nal combustion engine, and fourteenth,- to provide an engineof thisclass which is par ticularly simple and economical of construci tion, one having relatively fewmovingparts, which is durable, highly eflicient, and which;

will not readily deteriorate or get out of order. I

With these and other objects in view, as

will appear hereinafteniny invention consists' of certain novel features of construction,

combination and'arrangement of parts and 7 detail and particularly set forth in'the ap-i pended claims, reference being had to'the accompanying drawings and to the characportions, as will be hereinafter describedin.

t ers of reference thereon, which form a part of this application, in which:

Figure l is a fragmentary longitudinal sectional elevational view of my rotary valve type internal combustion engine in its preferred form of construction, with the view taken through 1-1 of Fig. 2; Fig. 2 is a longitudinal sectional view thereof in plan, taken through 2 2 ofFig. 1, showing certain parts and portions in plan, and others broken away and in section to facilitate the illustration; Fig. 3 is afragmentary transverse sectional elevational view thereof, taken through 3-3 of Fig. 1, and Fig. t is a sectional elevational view thereof, taken through t-A of Fig. 1.

Like characters of reference refer to similar parts and portions throughout the several views of the drawings.

The engine block 1, shown in the drawings, is the same, for all intents and purposes, as those now employed in conventional internal combustion engine construction, and is provided with a plurality of cylinders 1 in line, in which cylinders are reciprocally mounted pistons 2, which are connected, by means of connecting rods 3, with a multiplethrow crankshaft 4 revolubly mounted at the lower end of the engine block 1.

On. the upper face or head end of the block 1 is mounted the valve head or housing 5, which is secured to the block by means of studs or bolts 6. Extending longitudinally through and positioned substantially centrally in the valve housing is a cylindrical rotary valve bore or barrel 5*": 1n which is revolubly mounted a cylindrical rotary valve 7. The bore or barrel 5 communicates with each cylinder 1 of the engine block by means of large vertical ports or passages 5 whichare elongated and extend longitudinally with the axis of the bore 5. The valve 7 is preferably made of a hollow cast, cylindrical member 7 of smaller external diameter than the bore 5 of the valve head and is provided at its outer portion with a relatively thin steel shell 7", which is preferably shrunk around the member 7 and is hardened and ground at its peripheral surface. The valve 7 is provided with a plurality of wide and deep, transverse passages or channels 7, which extend into the members 7 and 7 to substantially the center, the inner or bottom walls of said channels being preferably straight. One of said channels is provided for each, engine cylinder and is adapted to register with the port or passage 5 in the valve head. At the opposite lateral sides of the valve head or housing 5 are provided fuel intake and ex haust ports or'passages 5 and 5 respectively, a pair of such ports or passages being provided for each cylinder of the engine block and so positioned as to register with the channels 7 c of the valve. Said ports or' passages 5 and 5 extend longitudinally with the axis of the valve and diverge outwardly to a large extent to the lateral faces of the valve housing, as shown best in Fig. 3. At the opposite side faces of the valve housing are secured the fuel intake and exhaust manifolds 8 and 9 of long continuous and similar construction, the former being secured over the passages 5 and the latter over the passages 5 of the valve housing. The intake manifold 8 is provided at its outer side and near its ends with a pair'of fuel intake and distributing openings 8 over which are secured the open ends of the primary distributing manifold 10 interinediate the ends of the outer side of which is secured asuitable carbureter 11. Intermediate the ends of the exhaust manifold 9 is provided an exhaust discharge portion or, passage 9 which may be connected to a suitable muffler, not shown. At the forward end of the exhaust manifold 9 is provided a somewhat smaller exhaust discharge portion or passage 9, which is connected, by means of a conductor 12 extending underneath the forward end of the valve housing, to a similar forwardly extending portion 8 of the.

fuel intake and distributing manifold 8. Extending longitudinally through the intake manifold 8 and spaced from the side walls thereof is an exhaust gas conductor 8, shown best in Fig. 3, which conductor communicates with the portion 8 and the conductor 12 at its forward end and with a similar portion 8 at its rear end. To the hollow portion 8 is preferably connected a reducing or backwardly tapering tube or nozzle 13, which permits the exhaust gases passing through the intake manifold to be discharged to the atmosphere as a cool gas. The tendency of the member 13, which extends backwardly, is also to facilitate the drawing of exhaust gases through the conductor in the intake manifold.

The forward end of the valve is provided with a head '4', which has a forwardly extending. hollow boss 7 on which is driven a longitudinally perforated steel bearing bushing 1%, which is revolubly mounted in a bronze bushing 15 mounted in the forward end of the bore of the valve housing. This bronze bushing is engaged by and positions the forward end of the valve.

In the rear end of the valve is secured a hardened steel head member 16 in the form of a plug, which is secured in position by means of screws 17 as shown best in Fig. 2. This head member is provided with a hollow, backwardly extending boss 16, which is revolubly mountedin a bronze bushing 18 driven into the central portion of a removable head member 19 having an annular flange adapted to be secured to a similar flange 5 at the rear end of the valve housing. Said bronze, bushing longitudinalcured the cooling fan 3 ly positions the rear end of the valve. Over the rear endofthe member 19 is screwably secured a cap'20.

. Into the hollow boss 7 is driven a hollow stub shaft 2l on the forward end of which is driven keyed a flange member 22 to which is secured, by means of bolts or screws 23, a silent'chain sprocket 24. This sprocket 24 is connected, bynieans of a chain 25, with a sprocket 26 secured tog the forward end of the crankshaft 4, the latter sprocket being one-half the diameter of the sprocket 24. Said sprockets and chain are encased in a casing consisting of a plate 27 and a cover 28, the latter being removably secured to the former, and the former being secured at its and above 'the wall forming-the cylindrical upper end to a flanged portion at the forward end of the valve housing and atits lower end to the forward side of a housing 29 secured to the forward end of the engine block and the crankcase.

' in order to remove the valve from the valve housing, the cover 28 is removed and the chain removed from the sprocket 24,

which permits the bushing 15,together with the valve, to be drawn through the forward end of the valve housing Intern'iediate the ends of the plate 27 and the cover 28 is revolubly mounted a shaft 30, which extends transversely through said members. On said shaft is secured a sprocket 31, which is driven by the chain 2?. chain 25 is held in engagement with the sprocket 3i bymeans of a'roller 32 revolubly mounted atthe' one end of a ClliLlIl-tlglltel'h ing arm 33, which is pivotally mounted at its opposite end on a shoulder screw 34 secured to. the plate 27. The roller j32-is held against the chain means of a' bolt 35 extending through an arcuate slot- 33 in a laterally extended arm oflthe member 33, as shown in Fig. 4. To the rearwardly extendedend of the shaft 30 is secured the revoluble member of the water pump 36, which is secured over an, opening in the water jacket. portion at the forwardend of the cylinder block in any suitable manner. To the forwardly extended end of the, shaft 30 is es 7 of any suitable construction. a I

The avater jacket 1* surrounding the outer portions of the engine cylinders communicates, in any suitable manner, with the water jacket or chamber 5, which surrounds the various passages and bore of the valve housing. Over the upper face of the valve housing is secured the cooling water manifold 38, which communicates freely with the water jacket of the valve housing and conducts the water therefrom to a suitable cooling means or radiator, not/shown.

To the forward end of the crankshaft 4 is secured another sprocket 39, which is positioned within the housing 29. At the opposite end of the housing 29 is mounted an- Said.

other sprocket 41, which is driven from the sprocket 39 by means of a chain 40. The

sprocket 41 is adapted to drive the distributing mechanism of the ignition systeinof' the engine, aswell as the electric generator and oilpump, not shown. i

In the side of the valvehousing are provided spark plug openings 5 in whioh are secured tliespark plugs 43. The openings 5 extend into the valve housing at an angle and communicate at their lower endswith the combustion chambers of the cylinders,

the angularity of the openings 5? being such welding or brazing, to the conductor, 44 for supplying oil under pressurejto an" equal numberof a-nnulargrooves Tispaced longitudinally around the periphery of the valve between the several transverse gas passages 7 thereinand between said passages and the ends of said valve, as shown in Figs. 1 and 2. Said annular grooves orfchannelsl' extend within short distances of the several gas-passages. These oil grooves 7F are/pro.- vided with small angularly positioned "oil grooves 7 which extend toward, but spaced at their ends from the gas passages topernut 01] to be fed to all essential portions of -'tlie' rotating valve and its containing barrel. The angularity of the grooves 73 is'such that the oil will automatically feed, .by reason of the rotation of the valve, toward the gas passages. In the oil conductor 45, outside of the valve housing, is provided a needlevalve 49,as shown in ig. 3, to permit oil to be conducted in regulated quantities and at various pressures to the grooves the valve so as to I provide lubrication-for the valves as desired. a

By reason of the particular construction of the valve housing, one of the oil grooves 7 is positioned outside of the longitudinal extent of its water jacket; therefore, the oil conductor 44 is extended beyond the forward'end of the upwardly extending portion of the water jacketand is connected by meansof a tube 44 with a plug extending through the wall of the valve and communicating with the foremost oil groove 7 The forward bearing for the valve is lubricated by anoil .conductor 46 communi- 1 eating with the bearing surface between the bronze bushing 15 and steel bushing 14 through an orifice in the bronze bushing. The rear bearlng' is oiled from an Oll conductor 47 extending through the removable head member 19, which supplies oil through an orifice in the bronze bushing to the hearing, as shown in Fig. 1. p a

The oil passing beyond the rear end of the valve will pass throughperforations in the flange portion of the head member 16 into the interior of the valve. Oil passing beyond the rear end of the rear bearing will pass into the interior of the valve through the hollow boss of the head member 16. The excess oil is thus passed from the rear to the forward end of the valve and passes through perforations in the head 7, which aline with similar perforations in the forward steel bearing bushing. The oil is then returned through the sprocket and chain casing to the crankcase ot the engine or other suitable reservoir by means of a conductor or opening at the lower end of said casing.

Though I have shown and described a particular construction, combination and a rangement of parts and portions. I do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my inven. tion, the construction. combination and ar rangement substantially as set forth in the appended claims.

Having thus described my invention. what- I claim as new and desire to secure by Letters Patent is:

1. Inan internal combustion engine, a cylinder having a water jacket head at itsone end, said head being provided with a valve bore, a valve revolubly mounted within said bore and provided with a transversely extending passage in its side wall for connecting the cylinder with a source of fuel. and an oil conductor connected with a source of oil under pressure and positioned within the water chamber of said head and communicating with said bore, said valve having annular oil conducting channels at the opposite sidesot said transversely extending passages therein, said oil channels being adapted to receive oil from said oil conductor.

2. In an internal combustion englne, a cylinder havlng a water picket head at its nicating with said bore, said valve having annular oil conducting channels at the opposite sides of said transversely extending passage therein, said oil channels being adapted to receive oil from said oil conductor, the peripheral surface of said valve being provided with angularly extending oil grooves communicating with the oil channels therein and adapted to conductoil toward said transverse passages when said valve is in rotation.

8. In an internal combustion engine, a plu rality of cylinders, a valve housing mounted over the one end of said cylinders, said housing having a longitudinal bore therein and sets of ports for each cylinder extending from said bore, a cylinder valve revolubly mounted at its ends in said bore, a flange member secured to the one end of said valve, said flange member being or" sufiiciently small diameter to permit the valve to be withdrawn from said valve housing, a. drive member secured to said flange member. and a bearing member secured to the valve housing in its bore at the end thereof opposite the drive member of the valve, said hearing member revolubly supporting the opposite end of said valve.

4.111 an internal combustion engine, a cylinder having a head at its one end, said head being provided with a valve bore, a

hollow cylinder valve revolubly mounted within said bore and provided with openings in ts opposite ends, means for supplying 011 under pressure to the per pheral surface of said valve, the excess oil from one end of'said valve being adapted to pass'through the same to the opposite end thereof, and means for conducting excess oil from said opposite end to a reservoir.

In testimony whereof, I have hereunto'set my hand at San Diego. California, this 7th day of April, 1926.

' EDWARD IV. JEWELL. 

